<UserControl x:Class="DispatcherTimerDome.MainPage"

    xmlns=""

    xmlns:x=""

    xmlns:d=""

    xmlns:mc=""

    mc:Ignorable="d"

    d:DesignHeight="300" d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">

        <StackPanel >

            <Border Background="DarkCyan" Width="400" Height="300" BorderBrush="Red" BorderThickness="5" CornerRadius="10" >

                <TextBlock Name="tbName" FontSize=" 24"  Width="200" Height="200" >

                </TextBlock>

            </Border>

          

        </StackPanel>

       

    </Grid>

</UserControl>

=============================================================================================================

using System;

using System.Collections.Generic; using System.Linq; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using System.Windows.Threading;

namespace DispatcherTimerDome

{     public partial class MainPage : UserControl     {         public MainPage()         {             InitializeComponent();             DispatcherTimer timer = new DispatcherTimer();             timer.Interval = new TimeSpan(0, 0, 1);             timer.Tick += new EventHandler(timer_Tick);             timer.Start();                                  }

        void timer_Tick(object sender, EventArgs e)

        {             tbName.Text = DateTime.Now.ToLongTimeString();         }     } }

 

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